Flare up at Ray, maybe for using batteries? (10)
I believe the answer is:
flashlight
'for using batteries?' is the definition.
I can't judge whether this defines the answer.
'flare up at ray' is the wordplay.
'flare up' becomes 'flash' (synonyms. I am not sure about the 'up' bit.).
'at' is a charade indicator (letters next to each other).
'ray' becomes 'light' (a ray of light).
'flash'+'light'='FLASHLIGHT'
'maybe' is the link.
Can you help me to learn more?
(Other definitions for flashlight that I've seen before include "One beams brightly" , "that's illuminating" , "It may be needed to see" , "shiner" , "Electric torch" .)